See how cooling speed shapes microstructure and properties.
Section 1
Explain how cooling rate influences grain size.
Relate fast and slow cooling to mechanical properties.
Describe how section thickness changes local cooling rate.
Section 2
A fast cooling rate produces fine grains and generally higher strength and hardness, while slow cooling gives coarse grains that are softer and more ductile. Mould material and section thickness control how quickly heat is removed.
Thin sections cool quickly; thick sections and the riser cool slowly, which is why directional solidification is planned carefully.
Section 3
Interactive animation will appear here.
Animated visualizations for this mission are being crafted and will be embedded in this space.
Section 4
Interactive activity coming in Sprint 3.
Hands-on drag-and-drop and simulation activities will be unlocked here in the next sprint.
Section 5
Answer all 5 questions correctly to unlock the next mission.